Revision of C989 - 06 Standard Specification for Ground Granulated Blast-Furnace Slag for Use in Concrete and Mortars

WK20786

1. Rationale

The current specification does not specify that a C 150 Type I or Type II should be used but this was the original intent of the specification. There has recently been a case where someone used a Type III cement. This change is to clarify that a Type I or Type II cement should be used as the reference cement.